Guest-induced modulation of the energy transfer process in porphyrin-based artificial light harvesting dendrimers

Dajeong Yim; Jooyoung Sung; Serom Kim; Juwon Oh; Hongsik Yoon; Young Mo Sung; Dongho Kim; Woo Dong Jang

doi:10.1021/jacs.6b11804

Guest-induced modulation of the energy transfer process in porphyrin-based artificial light harvesting dendrimers

Dajeong Yim, Jooyoung Sung, Serom Kim, Juwon Oh, Hongsik Yoon, Young Mo Sung, Dongho Kim, Woo Dong Jang

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

A series of dendritic multiporphyrin arrays (P_ZnTz-nP_FB; n =2, 4, 8) comprising a triazole-bearing focal zinc porphyrin (P_Zn) with a different number of freebase porphyrin (P_FB) wings has been synthesized, and their photoinduced energy transfer process has been evaluated. UV/vis absorption, emission, and time-resolved fluorescence measurements indicated that efficient excitation energy transfer takes place from the focal P_Zn to P_FB wings in P_ZnTz-nP_FB's. The triazole-bearing P_Zn effectively formed host-guest complexes with anionic species by means of axial coordination with the aid of multiple C-H hydrogen bonds. By addition of various anionic guests to P_ZnTz and P_ZnTz-nP_FB's, strong bathochromic shifts of P_Zn absorption were observed, indicating the HOMO-LUMO gap (ΔE_HOMO-LUMO) of P_Zn decreased by anion binding. Time-resolved fluorescence measurements revealed that the fluorescence emission predominantly takes place from P_Zn in P_ZnTz-nP_FB's after the addition of CN^-. This change was reversible because a treatment with a silver strip to remove CN fully recovered the original energy transfer process from the focal P_Zn to P_FB wings.

Original language	English
Pages (from-to)	993-1002
Number of pages	10
Journal	Journal of the American Chemical Society
Volume	139
Issue number	2
DOIs	https://doi.org/10.1021/jacs.6b11804
Publication status	Published - 2017 Jan 18

Bibliographical note

Funding Information:
This work was supported by the Mid-Career Researcher Program (2014R1A2A1A10051083), Global Research Laboratory Program (2013K1A1A2A02050183) funded by the National Research Foundation (NRF) of Korea, Ministry of Science, ICT & Future, and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20163030013960). The quantum calculations were performed using the supercomputing resources of the Korea Institute of Science and Technology Information (KISTI).

Publisher Copyright:
© 2016 American Chemical Society.

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

Access to Document

10.1021/jacs.6b11804

Cite this

@article{57020dd896564a8b832c2930297506aa,

title = "Guest-induced modulation of the energy transfer process in porphyrin-based artificial light harvesting dendrimers",

abstract = "A series of dendritic multiporphyrin arrays (PZnTz-nPFB; n =2, 4, 8) comprising a triazole-bearing focal zinc porphyrin (PZn) with a different number of freebase porphyrin (PFB) wings has been synthesized, and their photoinduced energy transfer process has been evaluated. UV/vis absorption, emission, and time-resolved fluorescence measurements indicated that efficient excitation energy transfer takes place from the focal PZn to PFB wings in PZnTz-nPFB's. The triazole-bearing PZn effectively formed host-guest complexes with anionic species by means of axial coordination with the aid of multiple C-H hydrogen bonds. By addition of various anionic guests to PZnTz and PZnTz-nPFB's, strong bathochromic shifts of PZn absorption were observed, indicating the HOMO-LUMO gap (ΔEHOMO-LUMO) of PZn decreased by anion binding. Time-resolved fluorescence measurements revealed that the fluorescence emission predominantly takes place from PZn in PZnTz-nPFB's after the addition of CN-. This change was reversible because a treatment with a silver strip to remove CN fully recovered the original energy transfer process from the focal PZn to PFB wings.",

author = "Dajeong Yim and Jooyoung Sung and Serom Kim and Juwon Oh and Hongsik Yoon and Sung, {Young Mo} and Dongho Kim and Jang, {Woo Dong}",

note = "Funding Information: This work was supported by the Mid-Career Researcher Program (2014R1A2A1A10051083), Global Research Laboratory Program (2013K1A1A2A02050183) funded by the National Research Foundation (NRF) of Korea, Ministry of Science, ICT & Future, and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20163030013960). The quantum calculations were performed using the supercomputing resources of the Korea Institute of Science and Technology Information (KISTI). Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

year = "2017",

month = jan,

day = "18",

doi = "10.1021/jacs.6b11804",

language = "English",

volume = "139",

pages = "993--1002",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

publisher = "American Chemical Society",

number = "2",

}

TY - JOUR

T1 - Guest-induced modulation of the energy transfer process in porphyrin-based artificial light harvesting dendrimers

AU - Yim, Dajeong

AU - Sung, Jooyoung

AU - Kim, Serom

AU - Oh, Juwon

AU - Yoon, Hongsik

AU - Sung, Young Mo

AU - Kim, Dongho

AU - Jang, Woo Dong

N1 - Funding Information: This work was supported by the Mid-Career Researcher Program (2014R1A2A1A10051083), Global Research Laboratory Program (2013K1A1A2A02050183) funded by the National Research Foundation (NRF) of Korea, Ministry of Science, ICT & Future, and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20163030013960). The quantum calculations were performed using the supercomputing resources of the Korea Institute of Science and Technology Information (KISTI). Publisher Copyright: © 2016 American Chemical Society.

PY - 2017/1/18

Y1 - 2017/1/18

N2 - A series of dendritic multiporphyrin arrays (PZnTz-nPFB; n =2, 4, 8) comprising a triazole-bearing focal zinc porphyrin (PZn) with a different number of freebase porphyrin (PFB) wings has been synthesized, and their photoinduced energy transfer process has been evaluated. UV/vis absorption, emission, and time-resolved fluorescence measurements indicated that efficient excitation energy transfer takes place from the focal PZn to PFB wings in PZnTz-nPFB's. The triazole-bearing PZn effectively formed host-guest complexes with anionic species by means of axial coordination with the aid of multiple C-H hydrogen bonds. By addition of various anionic guests to PZnTz and PZnTz-nPFB's, strong bathochromic shifts of PZn absorption were observed, indicating the HOMO-LUMO gap (ΔEHOMO-LUMO) of PZn decreased by anion binding. Time-resolved fluorescence measurements revealed that the fluorescence emission predominantly takes place from PZn in PZnTz-nPFB's after the addition of CN-. This change was reversible because a treatment with a silver strip to remove CN fully recovered the original energy transfer process from the focal PZn to PFB wings.

AB - A series of dendritic multiporphyrin arrays (PZnTz-nPFB; n =2, 4, 8) comprising a triazole-bearing focal zinc porphyrin (PZn) with a different number of freebase porphyrin (PFB) wings has been synthesized, and their photoinduced energy transfer process has been evaluated. UV/vis absorption, emission, and time-resolved fluorescence measurements indicated that efficient excitation energy transfer takes place from the focal PZn to PFB wings in PZnTz-nPFB's. The triazole-bearing PZn effectively formed host-guest complexes with anionic species by means of axial coordination with the aid of multiple C-H hydrogen bonds. By addition of various anionic guests to PZnTz and PZnTz-nPFB's, strong bathochromic shifts of PZn absorption were observed, indicating the HOMO-LUMO gap (ΔEHOMO-LUMO) of PZn decreased by anion binding. Time-resolved fluorescence measurements revealed that the fluorescence emission predominantly takes place from PZn in PZnTz-nPFB's after the addition of CN-. This change was reversible because a treatment with a silver strip to remove CN fully recovered the original energy transfer process from the focal PZn to PFB wings.

UR - http://www.scopus.com/inward/record.url?scp=85019134730&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85019134730&partnerID=8YFLogxK

U2 - 10.1021/jacs.6b11804

DO - 10.1021/jacs.6b11804

M3 - Article

C2 - 27977172

AN - SCOPUS:85019134730

SN - 0002-7863

VL - 139

SP - 993

EP - 1002

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 2

ER -

Guest-induced modulation of the energy transfer process in porphyrin-based artificial light harvesting dendrimers

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this